OLED display panel and display device

Abstract

The invention provides an OLED display panel and display equipment, and relates to the technical field of display, and the OLED display panel comprises a first electrode, a light-emitting layer and a second electrode which are arranged from bottom to top. The first electrode comprises a plurality of electrode units arranged at intervals, a pixel definition layer is arranged between every two adjacent electrode units, an eave structure is arranged on each pixel definition layer, each eave structure comprises a top structure and a conductive layer, and the eave structure comprises a first eave structure. First charging units are arranged on the upper portion and the side face of the first eave structure, the first charging units are electrically connected with the conductive layer of the first eave structure, and the conductive layer of the first eave structure is not electrically connected with the second electrode. The charging unit is integrated by taking the first eave structure as a carrier, the energy storage capability is added on the premise of not occupying an effective display area, the self-charging function of the display panel is realized, and the OLED display panel and the rechargeable battery are effectively combined.

Description

Technical Field

[0001] This application relates to the field of display panel technology, and more particularly to an OLED display panel and display device. Background Technology

[0002] Against the backdrop of ever-increasing demand for longer battery life in mobile devices, the deep integration of light energy conversion technology with Organic Light-Emitting Diode (OLED) display technology is becoming one of the core development directions in the display field. By integrating light energy conversion units inside the display panel, devices can autonomously charge using ambient light. This innovative approach not only effectively alleviates battery anxiety in mobile devices but also expands new possibilities for cutting-edge application scenarios such as flexible displays and wearable devices.

[0003] Meanwhile, in the field of OLED display technology, the pixel fabrication technology based on roof structures has established a mature technical system due to its outstanding advantages in high-resolution display scenarios. Currently, however, a solution has not yet been developed that organically integrates the roof structure with the charging unit to achieve coordinated operation of display and charging. Summary of the Invention

[0004] In view of this, this application provides an OLED display panel and a display device for combining a charging unit with an OLED display panel having an eaves structure.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application provide an OLED display panel, comprising: a first electrode, a light-emitting layer, and a second electrode disposed from bottom to top. The first electrode includes a plurality of spaced-apart electrode units, with a pixel definition layer disposed between adjacent electrode units. Each pixel definition layer has an eaves structure, which includes a top structure and a conductive layer, and includes a first eaves structure. A first charging unit is disposed above and on the side of the first eaves structure, and the first charging unit is electrically connected to the conductive layer of the first eaves structure. The conductive layer of the first eaves structure is not electrically connected to the second electrode.

[0006] In this application, the OLED display panel is provided with a first electrode, a light-emitting layer, and a second electrode from bottom to top. The first electrode includes multiple spaced electrode units, and a pixel definition layer is disposed between adjacent electrode units. The roof structure above it includes the first roof structure. A first charging unit is disposed above and on the side of the first roof structure, overlapping with its conductive layer. By integrating the charging unit on the first roof structure, energy storage capacity is added without occupying the effective display area, realizing the self-charging function of the display panel, and effectively combining the OLED display panel and the rechargeable battery.

[0007] In one possible implementation of the first aspect, the eaves structure further includes a second eaves structure, with the first eaves structure adjacent to the second eaves structure.

[0008] The second charging unit is provided above and on the side of the second eaves structure. The second charging unit is not electrically connected to the conductive layer of the second eaves structure. The conductive layer of the second eaves structure is electrically connected to the second electrode. The second charging unit is electrically connected to the first charging unit.

[0009] As an optional implementation of this application, the signals controlling the first charging unit and the second charging unit are physically isolated from the signals controlling the light-emitting layer, thus avoiding mutual interference between the signals.

[0010] In one possible implementation of the first aspect, the distance by which the top structure of the first eaves extends out of the conductive layer is a first value, and the distance by which the top structure of the second eaves extends out of the conductive layer is a second value.

[0011] The first value is greater than the second value.

[0012] As an optional implementation of this application, the conductive layer of the first eaves structure is ensured to be non-overlapping with the second electrode through differentiated size design, while the conductive layer of the second eaves structure is overlapping with the second electrode.

[0013] In one possible implementation of the first aspect, the area above the first eaves structure and / or the second eaves structure is not provided with a black matrix.

[0014] As an optional implementation of this application, the light absorption characteristics of the first charging unit and / or the second charging unit are used to replace the traditional black matrix, which simplifies the device structure and reduces the cost.

[0015] In one possible implementation of the first aspect, a third charging unit is disposed above the second electrode. The third charging unit is electrically connected to the first charging unit, and the second charging unit is electrically connected to the third charging unit.

[0016] As an optional implementation of this application, a third charging unit is integrated into the light-emitting area, thereby achieving effective utilization of the display area and further expansion of the charging area.

[0017] In one possible implementation of the first aspect, the area above the third charging unit is not provided with a color filter, polarizer, etc.

[0018] As an optional implementation of this application, by removing optical components such as polarizers, the light extraction efficiency and visual performance of the display panel are significantly improved.

[0019] In one possible implementation of the first aspect, an organic layer is disposed above the first electrode and the roof structure. A first encapsulation layer is disposed above the first charging unit, the first encapsulation layer being used to isolate the first charging unit from the organic layer. And / or, a second encapsulation layer is disposed above the second charging unit, the second encapsulation layer being used to isolate the second charging unit from the organic layer. And / or, a third encapsulation layer is disposed above the third charging unit, the third encapsulation layer being used to isolate the third charging unit from the organic layer.

[0020] As an optional implementation method of this application, the layered packaging design effectively protects each functional layer and improves the stability and lifespan of the device.

[0021] In one possible implementation of the first aspect, a first eaves structure is used to transmit a first signal, which controls a first charging unit, a second charging unit, and a third charging unit. A second eaves structure is used to transmit a second signal, which controls the light-emitting layer via a second electrode.

[0022] As an optional implementation of this application, two independent signal transmission systems are established to ensure that the display and charging functions can work independently and efficiently together.

[0023] In one possible implementation of the first aspect, the light transmittance of the first charging unit is less than a first preset value, and the light transmittance of the second charging unit is less than the first preset value. The light transmittance of the third charging unit is greater than a second preset value, and the first preset value is less than the second preset value.

[0024] As an optional implementation of this application, by designing the light transmittance in zones, efficient photoelectric conversion is achieved in the non-light-emitting area, while high-quality display output is guaranteed in the light-emitting area.

[0025] In one possible implementation of the first aspect, the first charging unit includes: a first electrode layer, a first transport layer, and a first photoelectric conversion layer. The second charging unit includes: a second electrode layer, a second transport layer, and a second photoelectric conversion layer. The third charging unit includes: a third electrode layer, a third transport layer, and a third photoelectric conversion layer.

[0026] As an optional implementation method of this application, the standardized layered structure design facilitates the uniformity of the manufacturing process and ensures the consistency and reliability of the performance of each charging unit.

[0027] In one possible implementation of the first aspect, the thickness of the first photoelectric conversion layer is within a first preset range, the thickness of the second photoelectric conversion layer is within a first preset range, and the thickness of the third photoelectric conversion layer is within a second preset range, wherein the first preset range is greater than the second preset range.

[0028] As an optional implementation of this application, the performance balance of the charging unit in different regions in terms of light absorption and light transmittance is optimized by differential thickness control.

[0029] In one possible implementation of the first aspect, the first electrode layer, the second electrode layer, and the third electrode layer are all transparent electrodes.

[0030] As an optional implementation of this application, the fully transparent electrode design ensures the overall light transmittance of the display panel and supports multi-source charging modes.

[0031] Secondly, embodiments of this application provide a display device. The display device includes a power module and an OLED display panel as described in any embodiment of the first aspect.

[0032] The power module is used to provide voltage to the OLED display panel.

[0033] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0034] Figure 1 This application provides a schematic diagram of the structure of an OLED display panel with a first charging unit set on a first roof structure. Figure 2 A schematic diagram illustrating the specific structure of an OLED display panel with a first charging unit set on a first eaves structure, provided in an embodiment of this application; Figure 3 This application provides a schematic diagram of the structure of an OLED display panel with a second charging unit based on a second eaves structure. Figure 4 A schematic diagram illustrating the specific structure of an OLED display panel with a second charging unit set in a second eaves structure, provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an OLED display panel without a black matrix, provided in an embodiment of this application. Figure 6 A schematic diagram of the structure of an OLED display panel with a third charging unit based on an electrode unit, provided in an embodiment of this application; Figure 7 A schematic diagram of the specific structure of an OLED display panel with a third charging unit based on an electrode unit, provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of an OLED display panel with an encapsulation layer provided in an embodiment of this application; Figure 9A top view of an OLED display panel provided in an embodiment of this application; Figure 10 This is a schematic diagram of the structure of a photoelectric conversion rechargeable battery provided in an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures: 10. First electrode; 11. Electrode unit; 20. Light-emitting layer; 30. Second electrode; 40. Pixel definition layer; 50. Roof structure; 51. Top structure; 52. Conductive layer; 61. First charging unit; 62. Second charging unit; 63. Third charging unit; 70. TFT circuit; 80. Substrate; 90. Planarization layer; 100. First inorganic encapsulation layer; 110. Organic encapsulation layer; 120. Second inorganic encapsulation layer; 130. Third inorganic encapsulation layer; 01. Non-pixel area; 02. Pixel area; 601. Top electrode; 602. Electron transport layer; 603. Photoelectric conversion layer; 604. Hole transport layer; 605. Lower electrode. Detailed Implementation

[0036] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is only for explaining specific embodiments and is not intended to limit the application. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0037] Before providing a detailed explanation of the embodiments of this application, the application scenarios of these embodiments will be described first.

[0038] Currently, mobile display devices have increasingly higher requirements for battery life, and integrating light energy conversion functionality into the OLED display panel is an effective way to achieve self-charging. In the field of OLED display technology, pixel fabrication schemes based on roof structures have formed a relatively mature technical system, with this structure mainly serving the optimization and improvement of display functions. However, existing technologies have not yet presented a complete technical solution that organically combines the roof structure with a light-converting rechargeable battery to achieve coordinated operation of display and charging.

[0039] Therefore, this application provides an OLED display panel and a display device. By reusing and modifying the existing roof structure in the OLED display panel, and integrating light-converting rechargeable batteries on its top and sides, the roof structure not only performs the display function but also supports the charging unit and transmits charging signals, thus achieving integrated display and charging functions.

[0040] The following is a detailed explanation of an OLED display panel and display device provided in the embodiments of this application.

[0041] like Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of an OLED display panel provided in an embodiment of the present application. The OLED display panel includes: a first electrode 10, a light-emitting layer 20 and a second electrode 30 arranged from bottom to top; the first electrode 10 includes a plurality of electrode units 11 arranged at intervals, a pixel definition layer 40 is arranged between two adjacent electrode units 11, and an eaves structure 50 is arranged on each pixel definition layer 40. The eaves structure 50 includes a top structure 51 and a conductive layer 52.

[0042] In one possible implementation, the first electrode 10 can be an anode layer, the electrode unit 11 can be an anode unit, and the second electrode 30 can be a cathode layer.

[0043] The roof structure includes a first roof structure, with a first charging unit 61 disposed on the top and side of the first roof structure. The first charging unit 61 is electrically connected to the conductive layer of the first roof structure, and the conductive layer of the first roof structure is not electrically connected to the second electrode 30.

[0044] An electrical connection refers to establishing a low-resistance path between two or more conductive components that allows for the stable flow of current, in order to transmit electrical signals or electrical energy.

[0045] In one possible implementation, the electrical connection can be achieved through direct contact and overlap.

[0046] As an example, such as Figure 1 As shown, the second eaves structure 50 from left to right is the first eaves structure. The first charging unit 61 is provided on the top and side of the eaves structure. The top structure 51 has holes, so that the first charging unit 61 can be connected to the conductive layer 52 through the holes, thereby realizing the electrical connection between the first charging unit 61 and the conductive layer 52.

[0047] In the embodiments of this application, electrical connections can also be achieved in other ways, such as by using conductive adhesive / conductive silver paste, etc., which are not limited in this application.

[0048] The first charging unit 61 is used to convert light energy into electrical energy. For example, the first charging unit 61 can be a light-converting rechargeable battery.

[0049] For example, such as Figure 2 As shown, Figure 2 This is a schematic diagram illustrating the specific structure of an OLED display panel with a first charging unit 61 based on a first eaves structure, as provided in an embodiment of this application. The second and fourth eaves structures 50 from left to right are the first eaves structures. The non-pixel area 01 of the OLED display panel includes: a TFT circuit 70, a first electrode 10, a pixel definition layer 40, and the eaves structure 50. The first charging unit 61 (e.g., a light-converting rechargeable battery) is disposed above the first eaves structure, and the first charging unit 61 overlaps with the conductive layer 52. The pixel area 02 includes: a substrate 80, a planarization layer 90, a first electrode 10, a light-emitting layer 20, a second electrode 30, and a first inorganic encapsulation layer 100 (e.g., using a chemical vapor deposition (CVD) method). The second electrode 30 of the pixel area 02 does not overlap with the conductive layer 52 of the eaves structure 50.

[0050] In this application, the OLED display panel is provided with a first electrode 10, a light-emitting layer 20, and a second electrode 30 from bottom to top. The first electrode 10 includes a plurality of spaced electrode units 11, and a pixel definition layer 40 is disposed between adjacent electrode units 11. The roof structure 50 above it includes the first roof structure. The top and sides of the first roof structure are provided with a first charging unit 61 that overlaps with its conductive layer 52. By integrating the charging unit with the first roof structure as a carrier, energy storage capacity is added without occupying the effective display area, realizing the self-charging function of the display panel, and effectively combining the OLED display panel and the rechargeable battery.

[0051] In one possible embodiment of this application, an embodiment of this application provides a schematic diagram of an OLED display panel with a second charging unit based on a second eaves structure. The eaves structure 50 further includes a second eaves structure, and the first eaves structure is adjacent to the second eaves structure. In other words, the first eaves structure and the second eaves structure are spaced apart.

[0052] For example, a second eaves structure is set between every two first eaves structures.

[0053] For example, such as Figure 3 As shown, Figure 3 The image shows four eaves structures. From left to right, the first and third eaves structures are the second eaves structures, and the second and fourth eaves structures are the first eaves structures.

[0054] It is understood that multiple second eaves structures can be provided between every two first eaves structures. Alternatively, multiple first eaves structures can be provided between every two second eaves structures; this is not limited in the embodiments of this application.

[0055] The second charging unit 62 is provided above and on the side of the second eaves structure. The second charging unit 62 is not electrically connected to the conductive layer 52 of the second eaves structure. The conductive layer 52 of the second eaves structure is electrically connected to the second electrode 30. The second charging unit 62 is electrically connected to the first charging unit 61.

[0056] As an example, such as Figure 3 As shown, the first and third eaves structures from left to right of the eaves structure 50 are the second eaves structure. The second charging unit 62 is not connected to the conductive layer 52, but the conductive layer 52 is connected to the second electrode 30.

[0057] For example, the second charging unit 62 can be a light-converting rechargeable battery.

[0058] For example, such as Figure 4 As shown, Figure 4 This is a schematic diagram illustrating the specific structure of an OLED display panel with a second charging unit based on a second eaves structure, as provided in an embodiment of this application. The first and third eaves structures 50 from left to right are the second eaves structures. Taking the third eaves structure 50 as an example, a second charging unit 62 (e.g., a photoelectric rechargeable battery) is disposed on the top and sides of the eaves structure 50. The top structure 51 of the eaves structure 50 has no holes, and the photoelectric rechargeable battery 1 is not connected to the conductive layer 52, i.e., not electrically connected.

[0059] The first charging unit 61 is electrically connected to the second charging unit 62.

[0060] It is understandable that the conductive layer 52 of the second eaves structure overlaps with the second electrode 30, but the conductive layer 52 of the second eaves structure does not overlap with the second charging unit 62. The second charging unit 62 and the first charging unit 61 can transmit signals through the conductive layer 52 of the first eaves structure. Therefore, the signal of the first charging unit 61 and the signal of the second electrode 30 do not interfere with each other.

[0061] In one possible embodiment of this application, the distance by which the top structure 51 of the first eaves structure extends out of the conductive layer 52 is a first value, and the distance by which the top structure 51 of the second eaves structure extends out of the conductive layer 52 is a second value, wherein the first value is greater than the second value.

[0062] Specifically, when the distance by which the top structure 51 of the eaves structure 50 extends beyond the conductive layer 52 is a second value, the second electrode 30 can be kept in contact with the conductive layer 52 during fabrication. To prevent the conductive layer 52 of the first eaves structure from overlapping with the second electrode 30, the distance by which the top structure 51 extends beyond the conductive layer 52 is increased. This ensures that during fabrication of the second electrode 30, there is no second electrode 30 below the extended top structure 51, thus preventing the conductive layer 52 and the second electrode 30 from overlapping.

[0063] Understandably, the purpose of setting the first value to be greater than the second value is to prevent the conductive layer 52 of the first roof structure from overlapping with the second electrode 30.

[0064] For example, such as Figure 1 As shown, the second eaves structure 50 from left to right is the first eaves structure, and the distance from which its top structure 51 extends out of the conductive layer 52 is L1; the first eaves structure 50 from left to right is the second eaves structure, and the distance from which its top structure 51 extends out of the conductive layer 52 is L0, where L0 is less than L1.

[0065] It is worth noting that the conductive layer 52 of the first eaves structure and the second electrode 30 can be not connected in other ways, which are not limited in the embodiments of this application.

[0066] In one possible embodiment of this application, the area above the first eaves structure and / or the second eaves structure is not provided with a black matrix.

[0067] The black matrix (BM) is typically placed in non-pixel areas to separate each light-emitting unit, ensuring that the color of each unit is not affected by light crosstalk. The first charging unit 61, positioned above the first eaves structure, functions as a BM; therefore, no BM is placed in the corresponding area above the first eaves structure. Similarly, the second charging unit 62, positioned above the second eaves structure, functions as a BM; therefore, no BM is placed in the corresponding area above the second eaves structure.

[0068] For example, such as Figure 5 As shown, Figure 5This is a schematic diagram of an OLED display panel without a black matrix, provided in an embodiment of this application. From left to right, the first and third eaves structures 50 are the second eaves structures, and the second and fourth eaves structures 50 are the first eaves structures. The non-pixel area 01 includes: a TFT circuit 70, a first electrode 10, a pixel definition layer 40, and eaves structures 50. A first charging unit 61 (e.g., a light-converting rechargeable battery) is disposed above the first eaves structure, and the light-converting rechargeable battery overlaps with the conductive layer 52. The pixel area 02 includes: a substrate 80, a planarization layer 90, a first electrode 10, a light-emitting layer 20, a second electrode 30, and a first inorganic encapsulation layer 100 (e.g., using a chemical vapor deposition (CVD) method). The second electrode 30 of the pixel area 02 overlaps with the conductive layers 52 of the first and third eaves structures 50, but does not overlap with the conductive layers 52 of the second and fourth eaves structures 50. An organic encapsulation layer 110 (e.g., using an inkjet printing method for IJP) and a second inorganic encapsulation layer 120 are provided above pixel area 02 and non-pixel area 01. BM is not provided in the areas corresponding to the top of the second and fourth eaves structures 50, nor in the areas corresponding to the top of the first and third eaves structures 50. Color filters or polarizers (e.g., CF1, CF2, CF3) are provided in the area corresponding to the top of pixel area 02.

[0069] It is understood that when the first charging unit 61 is set above the first eaves structure, the corresponding area above it can also be set with a BM, and this is not limited in the embodiments of this application. When the second charging unit 62 is set above the second eaves structure, the corresponding area above it can also be set with a BM, and this is not limited in the embodiments of this application.

[0070] In one possible embodiment of this application, such as Figure 6 As shown, Figure 6 This is a schematic diagram of an OLED display panel with a third charging unit based on an electrode unit, provided as an embodiment of this application. A third charging unit 63 is disposed above the second electrode 30. The third charging unit 63 is electrically connected to the first charging unit 61 and to the second charging unit 62.

[0071] The third charging unit 63 is located in the area above the light-emitting layer, that is, the area of ​​the pixel region.

[0072] For example, the third charging unit 63 is a light-converting rechargeable battery.

[0073] For example, such as Figure 7 As shown, Figure 7This is a schematic diagram illustrating the specific structure of an OLED display panel with a third charging unit based on electrode units, provided in an embodiment of this application. From left to right, the first and third eaves structures 50 are the second eaves structures, and the second and fourth eaves structures 50 are the first eaves structures. The non-pixel area 01 includes: a TFT circuit 70, a first electrode 10, a pixel definition layer 40, and eaves structures 50. A first charging unit 61 (e.g., a photoelectric rechargeable battery) is disposed above the first eaves structure, and the first charging unit 61 overlaps with its conductive layer 52. A second charging unit 62 (e.g., a photoelectric rechargeable battery) is disposed above the second eaves structure, and the second charging unit 62 does not overlap with its conductive layer 52. The pixel area 02 includes: a substrate 80, a planarization layer 90, a first electrode 10, a light-emitting layer 20, a second electrode 30, a first inorganic encapsulation layer 100 (e.g., using chemical vapor deposition CVD), and a third charging unit 63 (e.g., a photoelectric rechargeable battery). The third charging unit 63 is connected to the first charging units 61 and the second charging units 62 on both sides.

[0074] In one possible embodiment of this application, no color filter or polarizer is provided in the area above the third charging unit.

[0075] For example, such as Figure 7 As shown, an organic encapsulation layer 110 (e.g., by inkjet printing an IJP) and a second inorganic encapsulation layer 120 are disposed from bottom to top above pixel area 02 and non-pixel area 01. No color filter or polarizer is disposed in the area corresponding to pixel area 02.

[0076] It is understood that a color filter or polarizer may also be provided above the third charging unit 63, but this is not limited in the embodiments of this application.

[0077] In one possible embodiment of this application, an organic layer is disposed above the first electrode 10 and the roof structure 50. A first encapsulation layer is disposed above the first charging unit 61, which is used to isolate the first charging unit 61 from the organic layer; and / or, a second encapsulation layer is disposed above the second charging unit 62, which is used to isolate the second charging unit 62 from the organic layer; and / or, a third encapsulation layer is disposed above the third charging unit 63, which is used to isolate the third charging unit 63 from the organic layer.

[0078] The first encapsulation layer, the second encapsulation layer, and the third encapsulation layer can be the same encapsulation layer, all used for waterproofing and oxygenation.

[0079] For example, the first encapsulation layer, the second encapsulation layer, and the third encapsulation layer can be inorganic encapsulation layers prepared by chemical vapor deposition.

[0080] For example, such as Figure 8 As shown, Figure 8 This is a schematic diagram of the structure of an OLED display panel with an encapsulation layer provided in an embodiment of this application. Figure 7 Based on the structure of the OLED display panel shown, a third inorganic encapsulation layer 130 is provided above the first charging unit 61, the second charging unit 62, and the third charging unit 63.

[0081] In one possible embodiment of this application, the first eaves structure is used to transmit a first signal, which is used to control the first charging unit 61, the second charging unit 62, and the third charging unit 63. The second eaves structure is used to transmit a second signal, which is used to control the light-emitting layer 20 through the second electrode 30.

[0082] The conductive layer of the first eaves structure overlaps with the first charging unit 61, the first charging unit 61 and the third charging unit 63 are electrically connected, and the third charging unit 63 is connected to the second charging unit 62. Therefore, the first signal can control the first charging unit 61, the second charging unit 62 and the third charging unit 63 through the conductive layer of the first eaves structure.

[0083] The second electrode 30 overlaps with the conductive layer 52 of the second eaves structure but not with the conductive layer 52 of the first eaves structure. Therefore, the second signal can control the light-emitting layer 20 through the conductive layer 52 of the second eaves structure and the second electrode 30 without affecting the first signal in the conductive layer 52 of the first eaves structure. In other words, the first signal and the second signal are transmitted independently and do not affect each other.

[0084] For example, such as Figure 9 As shown, Figure 9 This application provides a top view of an OLED display panel, combined with... Figure 8 The schematic diagram of the OLED display panel shown illustrates that the conductive layer 52 of the first eaves structure 50 is connected to the second electrode 30. A second signal can control the light-emitting layer 20 through the conductive layer 52 and the second electrode 30 of the first eaves structure. Combined with other second eaves structures (e.g., the third eaves structure 50), the transmission of the second signal across the entire panel is achieved. The conductive layer 52 of the second eaves structure 50 is connected to the first charging unit 61. A first signal can control the first charging unit 61, the second charging unit 62, and the third charging unit 63 through the conductive layer 52 of the second eaves structure 50. Combined with other first eaves structures (e.g., the fourth eaves structure 50), the transmission of the first signal across the entire panel is achieved.

[0085] In one possible embodiment of this application, the light transmittance of the first charging unit 61 is less than a first preset value. The light transmittance of the second charging unit 62 is less than the first preset value. The light transmittance of the third charging unit 63 is greater than the second preset value.

[0086] Among them, the first charging unit 61 and the second charging unit 62 correspond to the non-pixel area. Therefore, the first charging unit 61 and the second charging unit 62 need to replace the function of BM to achieve the light absorption effect. Therefore, their light transmittance needs to be relatively small.

[0087] For example, the first preset value is 10%, that is, the light transmittance of the first charging unit 61 is less than 10%, and the light transmittance of the second charging unit 62 is less than 10%.

[0088] The third charging unit 63 corresponds to the pixel area, therefore, the third charging unit 63 needs to have sufficient light transmission capability, and thus its light transmittance needs to be large.

[0089] For example, the second preset value is 45%, which means that the light transmittance of the third charging unit 63 is greater than 45%.

[0090] In one possible embodiment of this application, the first charging unit 61 includes a first electrode layer, a first transport layer, and a first photoelectric conversion layer. The second charging unit 62 includes a second electrode layer, a second transport layer, and a second photoelectric conversion layer. The third charging unit 63 includes a third electrode layer, a third transport layer, and a third photoelectric conversion layer.

[0091] It is understandable that the structures of the first charging unit 61, the second charging unit 62, and the third charging unit 63 can be the same, all including an electrode layer, a transmission layer, and a photoelectric conversion layer.

[0092] The electrode layer can be a transparent single-layer conductive film such as indium tin oxide (ITO), fluorine-doped tin oxide (FTO), indium zinc oxide (IZO), or silver (Ag); or a multilayer composite conductive film (e.g., ITO / Ag / ITO, ITO / Cu / ITO), which is not limited in the embodiments of this application.

[0093] For example, the electrode layer thickness is set to 30~90nm, and the thickness of the metal interlayer (e.g., Ag, Cu) is generally set to several nanometers.

[0094] The photoelectric conversion layer can be made of perovskite material or other photoelectric conversion materials.

[0095] For example, taking the perovskite layer as an example, the thickness of the perovskite layer above the eaves structure and the surrounding non-pixel area is generally set at 150~250nm.

[0096] It is worth noting that the thickness of the photoelectric conversion layer is not limited to 250nm. For example, to obtain better charging capability, it can even be set above 300nm, while still ensuring low transmittance.

[0097] The transport layer includes an electron transport layer and a hole transport layer.

[0098] The electron transport layer may be made of titanium dioxide (TiO2), or a composite material of tin dioxide / organofullerene molecules (SnO2 / C60), or other organic or composite materials, which are not limited in the embodiments of this application.

[0099] The hole transport layer can be made of inorganic materials, such as nickel oxide (NiO). x Alternatively, organic materials, such as small organic molecules (Spiro-OMeTAD), may be used, but this is not limited in the embodiments of this application.

[0100] For example, the thickness of the transport layer is designed to be 50~300nm, depending on the material chosen.

[0101] In one possible embodiment, the electrode layer is divided into an upper electrode and a lower electrode.

[0102] For example, such as Figure 10 As shown, Figure 10 This is a schematic diagram of the structure of a photoelectric conversion rechargeable battery provided in an embodiment of this application. The photoelectric conversion rechargeable battery consists of, from top to bottom: an upper electrode 601, an electron transport layer 602, a photoelectric conversion layer 603, a hole transport layer 604, and a lower electrode 605.

[0103] In one possible embodiment of this application, the thickness of the first photoelectric conversion layer is within a first preset range. The thickness of the second photoelectric conversion layer is within the first preset range. The thickness of the third photoelectric conversion layer is within a second preset range. The first preset range is greater than the second preset range.

[0104] Among them, the first charging unit 61 and the second charging unit 62 correspond to the non-pixel area, and need to ensure low light transmittance. Therefore, the thickness of the first photoelectric conversion layer and the second photoelectric conversion layer is relatively large.

[0105] For example, the thickness of the first photoelectric conversion layer and the second photoelectric conversion layer is set in the range of 150~300nm.

[0106] It is understood that the thickness of the first photoelectric conversion layer and the second photoelectric conversion layer may be the same or different, and this is not limited in the embodiments of this application.

[0107] The third charging unit 63 corresponds to the pixel area, which needs to ensure high light transmittance. Therefore, the thickness of the third photoelectric conversion layer is relatively small.

[0108] For example, the thickness of the third photoelectric conversion layer is set in the range of 50~150 nm.

[0109] In one possible embodiment of this application, the first electrode layer, the second electrode layer, and the third electrode layer are all transparent electrodes.

[0110] For example, the upper electrode 601 and lower electrode 605 of the first charging unit 61 are both transparent electrodes. The upper electrode 601 and lower electrode 605 of the second charging unit 62 are both transparent electrodes. The upper electrode 601 and lower electrode 605 of the third charging unit 63 are both transparent electrodes.

[0111] The transparent electrode can simultaneously absorb ambient light and OLED light, thus enabling multi-source charging of the first charging unit 61, the second charging unit 62, and the third charging unit 63.

[0112] Based on the same inventive concept, this application also provides a display device. Since the display device in this embodiment includes the display panel in the above embodiment, the display device in this embodiment has all the technical features and effects of the above-mentioned display panel embodiments. For details, please refer to the above embodiments, which will not be repeated here.

[0113] Optionally, the display device provided in this application embodiment further includes a power module, which is used to provide voltage to the OLED display panel.

[0114] It should be understood that in the description of this application and the appended claims, the terms "comprising," "including," "having," and any variations thereof are intended to cover non-exclusive inclusion and mean "including but not limited to," unless otherwise specifically emphasized.

[0115] In the description of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is used to describe the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0116] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items.

[0117] Furthermore, it should be understood in the description of this application that the terms "longitudinal," "horizontal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0118] In this application, unless otherwise expressly specified and limited, the terms "connection" and "linkage" should be interpreted broadly. For example, they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0119] Furthermore, in the description of this application and the appended claims, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein; features defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0120] In the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0121] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An OLED display panel, comprising: The first electrode, the light-emitting layer and the second electrode are arranged from bottom to top; The first electrode comprises a plurality of spaced electrode units, and a pixel definition layer is arranged between adjacent two electrode units, each pixel definition layer is provided with a roof structure, and the roof structure comprises a top structure and a conductive layer, characterized in that the roof structure comprises a first roof structure; A first charging unit is arranged above and on the side of the first roof structure, the first charging unit is electrically connected with the conductive layer of the first roof structure, and the conductive layer of the first roof structure is not electrically connected with the second electrode.

2. The OLED display panel of claim 1, wherein, The roof structure further comprises a second roof structure, and the first roof structure is adjacent to the second roof structure; A second charging unit is arranged above and on the side of the second roof structure, the second charging unit is not electrically connected with the conductive layer of the second roof structure, the conductive layer of the second roof structure is electrically connected with the second electrode, and the second charging unit is electrically connected with the first charging unit.

3. The OLED display panel of claim 2, wherein, The first roof structure extends out of the conductive layer by a first value, and the second roof structure extends out of the conductive layer by a second value, and the first value is greater than the second value. 4.The OLED display panel of claim 2, wherein, The first roof structure, and / or the corresponding area above the second roof structure is not provided with a black matrix.

5. The OLED display panel of claim 2, wherein, A third charging unit is arranged above the second electrode; The third charging unit is electrically connected with the first charging unit, and the third charging unit is electrically connected with the second charging unit.

6. The OLED display panel of claim 5, wherein, The corresponding area above the third charging unit is not provided with a color filter or a polarizer.

7. The OLED display panel of claim 5, wherein, An organic layer is arranged above the first electrode and the roof structure; A first encapsulation layer is arranged above the first charging unit, and the first encapsulation layer is used for isolating the first charging unit and the organic layer; And / or, A second encapsulation layer is arranged above the second charging unit, and the second encapsulation layer is used for isolating the second charging unit and the organic layer; And / or, A third encapsulation layer is arranged above the third charging unit, and the third encapsulation layer is used for isolating the third charging unit and the organic layer. 8.The OLED display panel of claim 5, wherein, The first roof structure is used for transmitting a first signal, and the first signal is used for controlling the first charging unit, the second charging unit and the third charging unit; The second roof structure is used for transmitting a second signal, and the second signal is used for controlling the light-emitting layer through the second electrode. 9.The OLED display panel of claim 5, wherein, The light transmittance of the first charging unit is less than a first preset value, and the light transmittance of the second charging unit is less than the first preset value; The light transmittance of the third charging unit is greater than a second preset value, and the first preset value is less than the second preset value.

10. A display device, characterized by comprising: The display device comprises a power module and the OLED display panel according to any one of claims 1-9; The power module is used for providing voltage for the OLED display panel.

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